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airwindows/plugins/WinVST/Smooth/SmoothProc.cpp
Chris Johnson 7bc9349d5b Smooth
2019-04-14 21:01:05 -04:00

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/* ========================================
* Smooth - Smooth.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __Smooth_H
#include "Smooth.h"
#endif
void Smooth::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= getSampleRate();
double clamp;
double chase = pow(A,2);
double makeup = (1.0+(chase*1.6)) * B;
double ratio = chase * 24.0;
chase /= overallscale;
chase *= 0.083; // set up the ratio of new val to old
double wet = C;
while (--sampleFrames >= 0)
{
long double inputSampleL = *in1;
long double inputSampleR = *in2;
static int noisesourceL = 0;
static int noisesourceR = 850010;
int residue;
double applyresidue;
noisesourceL = noisesourceL % 1700021; noisesourceL++;
residue = noisesourceL * noisesourceL;
residue = residue % 170003; residue *= residue;
residue = residue % 17011; residue *= residue;
residue = residue % 1709; residue *= residue;
residue = residue % 173; residue *= residue;
residue = residue % 17;
applyresidue = residue;
applyresidue *= 0.00000001;
applyresidue *= 0.00000001;
inputSampleL += applyresidue;
if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) {
inputSampleL -= applyresidue;
}
noisesourceR = noisesourceR % 1700021; noisesourceR++;
residue = noisesourceR * noisesourceR;
residue = residue % 170003; residue *= residue;
residue = residue % 17011; residue *= residue;
residue = residue % 1709; residue *= residue;
residue = residue % 173; residue *= residue;
residue = residue % 17;
applyresidue = residue;
applyresidue *= 0.00000001;
applyresidue *= 0.00000001;
inputSampleR += applyresidue;
if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
inputSampleR -= applyresidue;
}
//for live air, we always apply the dither noise. Then, if our result is
//effectively digital black, we'll subtract it again. We want a 'air' hiss
long double drySampleL = inputSampleL;
long double drySampleR = inputSampleR;
//left channel
clamp = fabs(inputSampleL - lastSampleAL);
clamp = sin(clamp*ratio);
lastSampleAL = inputSampleL;
gainAL *= (1.0 - chase);
gainAL += ((1.0-clamp) * chase);
if (gainAL > 1.0) gainAL = 1.0;
if (gainAL < 0.0) gainAL = 0.0;
if (gainAL != 1.0) inputSampleL *= gainAL;
clamp = fabs(inputSampleL - lastSampleBL);
clamp = sin(clamp*ratio);
lastSampleBL = inputSampleL;
gainBL *= (1.0 - chase);
gainBL += ((1.0-clamp) * chase);
if (gainBL > 1.0) gainBL = 1.0;
if (gainBL < 0.0) gainBL = 0.0;
if (gainBL != 1.0) inputSampleL *= gainBL;
clamp = fabs(inputSampleL - lastSampleCL);
clamp = sin(clamp*ratio);
lastSampleCL = inputSampleL;
gainCL *= (1.0 - chase);
gainCL += ((1.0-clamp) * chase);
if (gainCL > 1.0) gainCL = 1.0;
if (gainCL < 0.0) gainCL = 0.0;
if (gainCL != 1.0) inputSampleL *= gainCL;
clamp = fabs(inputSampleL - lastSampleDL);
clamp = sin(clamp*ratio);
lastSampleDL = inputSampleL;
gainDL *= (1.0 - chase);
gainDL += ((1.0-clamp) * chase);
if (gainDL > 1.0) gainDL = 1.0;
if (gainDL < 0.0) gainDL = 0.0;
if (gainDL != 1.0) inputSampleL *= gainDL;
clamp = fabs(inputSampleL - lastSampleEL);
clamp = sin(clamp*ratio);
lastSampleEL = inputSampleL;
gainEL *= (1.0 - chase);
gainEL += ((1.0-clamp) * chase);
if (gainEL > 1.0) gainEL = 1.0;
if (gainEL < 0.0) gainEL = 0.0;
if (gainEL != 1.0) inputSampleL *= gainEL;
//end left channel
//right channel
clamp = fabs(inputSampleR - lastSampleAR);
clamp = sin(clamp*ratio);
lastSampleAR = inputSampleR;
gainAR *= (1.0 - chase);
gainAR += ((1.0-clamp) * chase);
if (gainAR > 1.0) gainAR = 1.0;
if (gainAR < 0.0) gainAR = 0.0;
if (gainAR != 1.0) inputSampleR *= gainAR;
clamp = fabs(inputSampleR - lastSampleBR);
clamp = sin(clamp*ratio);
lastSampleBR = inputSampleR;
gainBR *= (1.0 - chase);
gainBR += ((1.0-clamp) * chase);
if (gainBR > 1.0) gainBR = 1.0;
if (gainBR < 0.0) gainBR = 0.0;
if (gainBR != 1.0) inputSampleR *= gainBR;
clamp = fabs(inputSampleR - lastSampleCR);
clamp = sin(clamp*ratio);
lastSampleCR = inputSampleR;
gainCR *= (1.0 - chase);
gainCR += ((1.0-clamp) * chase);
if (gainCR > 1.0) gainCR = 1.0;
if (gainCR < 0.0) gainCR = 0.0;
if (gainCR != 1.0) inputSampleR *= gainCR;
clamp = fabs(inputSampleR - lastSampleDR);
clamp = sin(clamp*ratio);
lastSampleDR = inputSampleR;
gainDR *= (1.0 - chase);
gainDR += ((1.0-clamp) * chase);
if (gainDR > 1.0) gainDR = 1.0;
if (gainDR < 0.0) gainDR = 0.0;
if (gainDR != 1.0) inputSampleR *= gainDR;
clamp = fabs(inputSampleR - lastSampleER);
clamp = sin(clamp*ratio);
lastSampleER = inputSampleR;
gainER *= (1.0 - chase);
gainER += ((1.0-clamp) * chase);
if (gainER > 1.0) gainER = 1.0;
if (gainER < 0.0) gainER = 0.0;
if (gainER != 1.0) inputSampleR *= gainER;
//end right channel
if (makeup !=1.0) {
inputSampleL *= makeup;
inputSampleR *= makeup;
}
if (wet !=1.0) {
inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0 - wet));
inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0 - wet));
}
//begin 32 bit stereo floating point dither
int expon; frexpf((float)inputSampleL, &expon);
fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
inputSampleL += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
frexpf((float)inputSampleR, &expon);
fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
inputSampleR += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
//end 32 bit stereo floating point dither
*out1 = inputSampleL;
*out2 = inputSampleR;
*in1++;
*in2++;
*out1++;
*out2++;
}
}
void Smooth::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= getSampleRate();
double clamp;
double chase = pow(A,2);
double makeup = (1.0+(chase*1.6)) * B;
double ratio = chase * 24.0;
chase /= overallscale;
chase *= 0.083; // set up the ratio of new val to old
double wet = C;
while (--sampleFrames >= 0)
{
long double inputSampleL = *in1;
long double inputSampleR = *in2;
static int noisesourceL = 0;
static int noisesourceR = 850010;
int residue;
double applyresidue;
noisesourceL = noisesourceL % 1700021; noisesourceL++;
residue = noisesourceL * noisesourceL;
residue = residue % 170003; residue *= residue;
residue = residue % 17011; residue *= residue;
residue = residue % 1709; residue *= residue;
residue = residue % 173; residue *= residue;
residue = residue % 17;
applyresidue = residue;
applyresidue *= 0.00000001;
applyresidue *= 0.00000001;
inputSampleL += applyresidue;
if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) {
inputSampleL -= applyresidue;
}
noisesourceR = noisesourceR % 1700021; noisesourceR++;
residue = noisesourceR * noisesourceR;
residue = residue % 170003; residue *= residue;
residue = residue % 17011; residue *= residue;
residue = residue % 1709; residue *= residue;
residue = residue % 173; residue *= residue;
residue = residue % 17;
applyresidue = residue;
applyresidue *= 0.00000001;
applyresidue *= 0.00000001;
inputSampleR += applyresidue;
if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
inputSampleR -= applyresidue;
}
//for live air, we always apply the dither noise. Then, if our result is
//effectively digital black, we'll subtract it again. We want a 'air' hiss
long double drySampleL = inputSampleL;
long double drySampleR = inputSampleR;
//left channel
clamp = fabs(inputSampleL - lastSampleAL);
clamp = sin(clamp*ratio);
lastSampleAL = inputSampleL;
gainAL *= (1.0 - chase);
gainAL += ((1.0-clamp) * chase);
if (gainAL > 1.0) gainAL = 1.0;
if (gainAL < 0.0) gainAL = 0.0;
if (gainAL != 1.0) inputSampleL *= gainAL;
clamp = fabs(inputSampleL - lastSampleBL);
clamp = sin(clamp*ratio);
lastSampleBL = inputSampleL;
gainBL *= (1.0 - chase);
gainBL += ((1.0-clamp) * chase);
if (gainBL > 1.0) gainBL = 1.0;
if (gainBL < 0.0) gainBL = 0.0;
if (gainBL != 1.0) inputSampleL *= gainBL;
clamp = fabs(inputSampleL - lastSampleCL);
clamp = sin(clamp*ratio);
lastSampleCL = inputSampleL;
gainCL *= (1.0 - chase);
gainCL += ((1.0-clamp) * chase);
if (gainCL > 1.0) gainCL = 1.0;
if (gainCL < 0.0) gainCL = 0.0;
if (gainCL != 1.0) inputSampleL *= gainCL;
clamp = fabs(inputSampleL - lastSampleDL);
clamp = sin(clamp*ratio);
lastSampleDL = inputSampleL;
gainDL *= (1.0 - chase);
gainDL += ((1.0-clamp) * chase);
if (gainDL > 1.0) gainDL = 1.0;
if (gainDL < 0.0) gainDL = 0.0;
if (gainDL != 1.0) inputSampleL *= gainDL;
clamp = fabs(inputSampleL - lastSampleEL);
clamp = sin(clamp*ratio);
lastSampleEL = inputSampleL;
gainEL *= (1.0 - chase);
gainEL += ((1.0-clamp) * chase);
if (gainEL > 1.0) gainEL = 1.0;
if (gainEL < 0.0) gainEL = 0.0;
if (gainEL != 1.0) inputSampleL *= gainEL;
//end left channel
//right channel
clamp = fabs(inputSampleR - lastSampleAR);
clamp = sin(clamp*ratio);
lastSampleAR = inputSampleR;
gainAR *= (1.0 - chase);
gainAR += ((1.0-clamp) * chase);
if (gainAR > 1.0) gainAR = 1.0;
if (gainAR < 0.0) gainAR = 0.0;
if (gainAR != 1.0) inputSampleR *= gainAR;
clamp = fabs(inputSampleR - lastSampleBR);
clamp = sin(clamp*ratio);
lastSampleBR = inputSampleR;
gainBR *= (1.0 - chase);
gainBR += ((1.0-clamp) * chase);
if (gainBR > 1.0) gainBR = 1.0;
if (gainBR < 0.0) gainBR = 0.0;
if (gainBR != 1.0) inputSampleR *= gainBR;
clamp = fabs(inputSampleR - lastSampleCR);
clamp = sin(clamp*ratio);
lastSampleCR = inputSampleR;
gainCR *= (1.0 - chase);
gainCR += ((1.0-clamp) * chase);
if (gainCR > 1.0) gainCR = 1.0;
if (gainCR < 0.0) gainCR = 0.0;
if (gainCR != 1.0) inputSampleR *= gainCR;
clamp = fabs(inputSampleR - lastSampleDR);
clamp = sin(clamp*ratio);
lastSampleDR = inputSampleR;
gainDR *= (1.0 - chase);
gainDR += ((1.0-clamp) * chase);
if (gainDR > 1.0) gainDR = 1.0;
if (gainDR < 0.0) gainDR = 0.0;
if (gainDR != 1.0) inputSampleR *= gainDR;
clamp = fabs(inputSampleR - lastSampleER);
clamp = sin(clamp*ratio);
lastSampleER = inputSampleR;
gainER *= (1.0 - chase);
gainER += ((1.0-clamp) * chase);
if (gainER > 1.0) gainER = 1.0;
if (gainER < 0.0) gainER = 0.0;
if (gainER != 1.0) inputSampleR *= gainER;
//end right channel
if (makeup !=1.0) {
inputSampleL *= makeup;
inputSampleR *= makeup;
}
if (wet !=1.0) {
inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0 - wet));
inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0 - wet));
}
//begin 64 bit stereo floating point dither
int expon; frexp((double)inputSampleL, &expon);
fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
inputSampleL += ((double(fpd)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
frexp((double)inputSampleR, &expon);
fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
inputSampleR += ((double(fpd)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
//end 64 bit stereo floating point dither
*out1 = inputSampleL;
*out2 = inputSampleR;
*in1++;
*in2++;
*out1++;
*out2++;
}
}
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